Stephen Wolfram answers general questions from his viewers about science and technology as part of an unscripted livestream series, also available on YouTube here: https://wolfr.am/youtube-sw-qa

Questions include: Could every exoplanet have a habitable zone if one could get just far enough away from the star? What makes a planet habitable? - Why do we measure sound using decibels? - What advances in synthetic biology do you think will happen in the short term, the long term and the very long term? Have you visited Ginkgo Bioworks in Boston? - AI-designed proteins that do biocomputation - These processes, in the case of life, exist in a coevolved physiochemical balance. That would be hard to reproduce. - How do you think space travel will change/improve as technology advances? Will it become a regular form of transportation sometime in the future? - When helicopters were first developed, people thought they would transform cities and be our new taxis. But they're too expensive. - On the subject of shorter travel times, I remember Heinlein suggesting in his books using suborbital rockets to travel between destinations. Would such an idea be too expensive for companies to run? Or would such an idea be feasible to cut travel time? - I think the cost and safety risks associated with space and underwater ocean tourism will keep them from ever being commonplace. - Now your perspective on what's possible for travel is different than the younger generations. - In relation to what you are saying about air travel, cellphones and computers, all of those technologies went through a long period (10+ years) of being luxury goods that only the richest people on Earth could use. The same will probably be true for space travel. Do you think that problem will get better or worse over time?